Change form cylinder mounting for rotary printing presses



June 4%, EQEa w. K. E CKHARD 2,045,931

CHANGE FORM CYLINDER MOUNTING FOR ROTARY PRINTING PRESSES Filed May 24, 1935 INVENTOR.

ATTORNEYS Patented June 30, 1936 UNiTED STATES PATENT OFFICE.

CHANGE FORM CYLINDER MOUNTING FOR ROTARY PRINTING PRESSES William K. Eckhard, Westerly, R. I., assignor to C. B. Cottrell & Sons Company, Westerly, R. I., a corporation of Delaware Application May 24, 1935, Serial No. 23,193

14 Claims. (01. 101--247) This invention consists in novel means for so pression cylinder 2. An overthrow spring l4 may mounting change form cylinders of a selected be provided for yieldingly holding the handle in diameter that the cylinders may be readily moved either of its two diametrically opposed positions, into and out of printing coaction with their ima stop 15 on the side frame I serving to limit the 5 pression cylinder and may also be easily removed inward throw of the handle. This handle 13 is 5 from the press frame when so desired. fast on the eccentric stud 8.

This invention comprises a change form cyl- Means are provided for adjustably limiting the inder mounting for each end of the cylinder inward movement of the box 6 and thereby the shaft, in which mounting the cylinder shaft box change form cylinder, which means is herein 10 is slidably mounted in an open end pocket in the shown as a screw it entering the bottom of the 10 side frame and is removably connected to a man- Open end pocket 5, the head of which screw is ually operated eccentric stud, which stud in turn engaged by the inner end of the cylinder boX is mounted in a rotatively adjustable eccentric shank l as the form cylinder 3 reaches its proper bushing, printing contact with the impression cylinder 2.

A practical embodiment of this invention is The manually operated eccentric stud B is 15 represented in the accompanying drawing, in mounted in a rotatively adjustable eccentric hi h bushing ll, which bushing is provided with an Fig. 1 represents a detail top plan View, partly arm I8 having a concentric elongated slot l9, in section, of one of the cylinder mountings and through which the shank of a set screw passes it the adjacent ends of the change form and iminto the side frame I. This eccentric bushing 20 pression cylinders; may be adjusted to take up any looseness in the Fig. 2 represents a detail side view of the same; connections between the rods 9 and ill, the ec- Fig. 3 represents a horizontal section taken in centric stud 8 and the locking pin II.

the plane of the line IIIl'II of Fig. 2, looking Pins 2|, 22 project from the outer and inner 35 in the direction of the arrows; and faces of the side frame I in position to support Fig. 4 represents a side view of a cylinder shaft the connecting rods 9 a d 10 when t ey are unbox with a short shank for mounting a change coupled from the shaft box and to hold the rods form cylinder one-half of the diameter of the in position to facilitate their coupling and uncylinder illustrated in full lines in Figs. 1 and 2. coupling.

39 The side frame of the rotary printing press In operation: A change form cylinder of the is denoted by l, the impression cylinder by 2, the selected diameter and its shaft boxes are placed change form cylinder by 3 and its shaft by 4. in the frame and each of the boxes is coupled It will be understood that similar mountings to the outer ends of its connecting rods 9 and are provided for both ends of the change form I!) by the locking pin ll. Each handle I3 is then cylinder shaft, one mounting only being illusswung over from its outward position shown in 5 trated in the accompanying drawing, which dotted lines in Fig. 2 to its inward position shown mounting will now be described. in full lines in the same figure. This movement The side frame I has an open end pocket 5, of the handle will bring the form cylinder inthe side walls of which form a track for slidably wardly into its operative position in printing co- 4O mounting the change form cylinder shaft box 6, action with the impression cylnder 2. To throw 40 which box has an inwardly extended shank 1 off the impression each handle 13 is swung back which varies in length according to the diameter to its original position. This will move the of its change form cylinder. change form cylinder away from the impression An eccentric stud 8 is removably connected cylinder and at the same time will take ofi the 5 through the rods 9 and I 0 to the shaft box shank tension on the locking pin H and thus permit l on both sides of the side frame I by a locking the pin to be easily withdrawn for the removal pin 1 I which passes through the shank l and and replacement of the change form cylinder. through the outer ends of the connecting rods It will be noted that the inward movement 9 and It. A cotter l2 may be employed for reof the change form cylinder is limited by the admovably securing the locking pin l I in its operajustable stop screw I5 and that, as has been above 50 tive position. described, all lost motion can be taken up by the A handle 13 is provided for rocking the eccenrotatively adjustable eccentric bushing l1. tric stud 8 to move the shaft box 6 inwardly and It is evident that various changes may be reoutwardly for bringing the change form cylinder sorted to in the construction, form and arrange- 3 into and out of its printing contact with the imment of the several parts without departing from 55 2 l the spirit and scope of my invention, and hence I do not intend to be limited to the particular embodiment herein shown and described, but

What I claim is: I

1. A changeform cylinder mounting comprising a side frame, a cylinder shaft box slidable therein, an eccentric stud mounted to rock in the side frame, means connecting the stud to said box, and manually operated means for rocking the stud to move the cylinder into and out of its operative position.

2. A change form cylinder mounting comprising a side frame, a cylinder shaft box slidable therein, an eccentric stud mounted to rock in the side frame, means connecting the stud to said box, manually operated means for rocking the stud to move the cylinder into and out of its operative position, and means for adjustablylimcylinder shaft box slidable therein, an eccentric stud removably connected to said box to permit the ready removal of the box and cylinder, manually operated means for rocking the stud to move the cylinder into and out of its operative position, and means for adjustably limiting the inward movement of the cylinder box.

5. A'change form cylinder mounting comprising a side frame, a cylinder shaft box slidable therein, an eccentric bushing mounted for rotative adjustment in the side frame, an eccentric stud mounted to rock in said bushing, means connecting the stud to said box, and manually operated means for rocking the stud to move the cylinder into and out of its operative position.

6. A change form cylinder mounting comprising a side frame, a cylinder shaft box slidable therein, an eccentric bushing mounted for rotative adjustment in the side frame, an eccentric stud mounted to rock in said bushing, means connecting the stud to said box, manually operated means for rocking the stud to move the cylinder into and out of its operative position, and means for adjustably limiting the inward movement of the cylinder box.

'7. A change form cylinder mounting comprising a side frame having an open end pocket, a

cylinder shaft box slidable therein, a rotatively adjustable eccentric bushing, an eccentric stud mounted therein and removably connected to said box to permit the ready removal. of the box and cylinder, and manually operated means for rocka ing the stud to move the cylinder into and out of its operative position. 8. A change form cylinder mounting comprising a side frame having an open end pocket, a cylinder shaft 'box slidabletherein, a rotatively adjustable eccentric bushing, an eccentric stud mounted therein and removably connected to said box to permit the ready removal of the box and cylinder, manually operated means for rocking the stud to move the cylinder into and out of its operative-position, and means for adjustably limiting the inward movement of the cylinder box. 5

9. A change form cylinder mounting comprising a side frame, a cylinder shaft box slidable therein and having a shank 'of a predetermined length according to the diameter of the change form cylinder, an eccentric stud connected to said box shank, and manually operated means for rocking the stud to move the cylinder into and out of its operative position.

10. A change form cylinder mounting comprising a side frame, a cylinder shaft box slidable therein and having a shank of a predetermined length according to the diameter of the change form cylinder, an eccentric stud connected to said box shank, manually operated means for rocking the stud to move the cylinder into and out of its operative position,jand means for adjustably limiting the inward movement of the cylinder box.

11. A change form cylinder mounting comprising a side frame having an open end pocket, a

cylinder shaft box "slidable therein and having 25' a shank of a predetermined length according to the diameter of the change form cylinder, a rotatively adjustable eccentric bushing, an eccen-f tric stud mounted in said bushing and removably connected to said box shank to permit the ready removal of the box and cylinder, and manually operated means for rocking the stud to move the cylinder into and out of its operative position.

12. A change form cylinder mounting compris ing a side frame having an open end pocket, a

cylinder shaft box slidable therein and having a.

shank of a predetermined length according to the diameter of the change form cylinder, a rotatively adjustable eccentric bushing, an eccentric stud mounted in said bushing and removably connected to said box shank to permit the ready removal of the box and cylinder, manually operated means for rocking the stud to move the cylinder into and out'of its operative position, and

means for adjustably limiting the inward move- 4 ment of "the cylinder box.

13. A change form cylinder mounting compris ing a side frame, a cylinder shaft box slidable therein and having a shank of a predetermined length according to the diameter of the change form cylinder, an eccentric stud, rods removably connecting the eccentric stud to said box shank upon both sides of the side frame, and a handle for rocking the stud to move the cylinder into and out of its operative position.

14. A change form cylinder mounting comprising a side frame having an open end pocket, a cylinder shaftibox slidable therein and having a shank of a predetermined length according to the diameter of the change forrn-cylinder, an 60 eccentric stud, rods, removably connecting the eccentric stud to said box shank upon both sides of the side frame, ahandle for rocking the stud to move the cylinder into and out of its operative position, and an adjustable stop for limiting the G5 inward movement of the cylinder box.

WILLIAM K. ECKHARD' 

